[Epizootiology of leptospirosis in swine in the German Democratic Republic].
D000034:Abortion, Veterinary; D000818:Animals; D005260:Female; D005859:Germany, East; D007922:Leptospirosis / Q000662:veterinary*; D011247:Pregnancy; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology*
Zur Epizootiologie der Leptospirose des Schweines in der DDR.